Target

FunctionE3 ubiquitin-protein ligase that functions in the antephase checkpoint by actively delaying passage into mitosis in response to microtubule poisons. Acts in early prophase before chromosome condensation, when the centrosome move apart from each other along the periphery of the nucleus. Probably involved in signaling the presence of mitotic stress caused by microtubule poisons by mediating the 'Lys-48'-linked ubiquitination of target proteins, leading to their degradation by the proteasome. Promotes the ubiquitination and subsequent degradation of AURKA and PLK1. Probably acts as a tumor suppressor, possibly by mediating the polyubiquitination of HDAC1, leading to its degradation. May also promote the formation of 'Lys-63'-linked polyubiquitin chains and functions with the specific ubiquitin-conjugating UBC13-MMS2 (UBE2N-UBE2V2) heterodimer. Substrates that are polyubiquitinated at 'Lys-63' are usually not targeted for degradation, but are rather involved in signaling cellular stress.

DomainThe PBZ-type zinc finger (also named CYR) mediates non-covalent poly(ADP-ribose)-binding. Poly(ADP-ribose)-binding is dependent on the presence of zinc and is required for its function in antephase checkpoint.The FHA domain plays a key role in the anti-proliferative properties of the protein and is involved in initiating a cell cycle arrest at G2/M. The FHA domain may be required to interact with phosphorylated proteins.

Post-translationalmodificationsPoly-ADP-ribosylated. In addition to binding non covalently poly(ADP-ribose) via its PBZ-type zinc finger, the protein is also covalently poly-ADP-ribosylated by PARP1.Autoubiquitinated; may regulate its cellular level.Phosphorylated upon DNA damage, probably by ATM or ATR (By similarity). Phosphorylated by PKB. Phosphorylation may affect its E3 ligase activity.

We will take back the goat antibody (ab13773) if you send it back at 4 deg C and cover the cost of the shipping plus a 20% re-stocking fee. A credit note for the original order minus the 20% re-stocking fee will be generated once the product is receive...

The following protocol using ab13773 at 1 ug/ml and 0.5 ug/ml both gave a 80 kDa band in Human Brain lysates:
- SDS PAGE. Samples were run at 200V constant on a 12% acrylamide SDS-PAGE mini gel - using Biorad Mini-Protean 3 kit and protocols. Befo...